Like I said before let's hope I can finish this project. This was made all late afternoon on a Thursday. Please hope you enjoy the calcultor and it took some coding to do it. I remember when I made my last calculatr it was a failure, because I didn't know about lists in Scratch, but should have.
The calculator works in a simple manner: It uses a list to combine the value of each number, while the solve button figures out the total value of numbers in the list, which is why a list was needed (to combine all values placed in the list). From there, pressing OUT takes all the numbers out of the list so that new equations can be done. This makes it easier to start without pressing the flag all the tim. Additionally, it sets some other variables to zero too. So yeah basically thats how the calculator works.